mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
b848e4bfcf
They are kept around for the sake of the standalone glue, which is used for e.g. webapprt, which doesn't have direct access to jemalloc, and thus still needs a wrapper to go through the xpcom function list and get to jemalloc from there.
299 lines
9.1 KiB
C++
299 lines
9.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ChangeStyleTxn.h"
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#include "mozilla/dom/Element.h" // for Element
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#include "nsAString.h" // for nsAString_internal::Append, etc
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#include "nsCRT.h" // for nsCRT::IsAsciiSpace
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#include "nsDebug.h" // for NS_ENSURE_SUCCESS, etc
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#include "nsError.h" // for NS_ERROR_NULL_POINTER, etc
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#include "nsGkAtoms.h" // for nsGkAtoms, etc
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#include "nsIDOMCSSStyleDeclaration.h" // for nsIDOMCSSStyleDeclaration
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#include "nsIDOMElementCSSInlineStyle.h" // for nsIDOMElementCSSInlineStyle
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#include "nsLiteralString.h" // for NS_LITERAL_STRING, etc
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#include "nsReadableUtils.h" // for ToNewUnicode
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#include "nsString.h" // for nsAutoString, nsString, etc
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#include "nsUnicharUtils.h" // for nsCaseInsensitiveStringComparator
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using namespace mozilla;
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using namespace mozilla::dom;
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#define kNullCh (char16_t('\0'))
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NS_IMPL_CYCLE_COLLECTION_INHERITED(ChangeStyleTxn, EditTxn, mElement)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ChangeStyleTxn)
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NS_INTERFACE_MAP_END_INHERITING(EditTxn)
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NS_IMPL_ADDREF_INHERITED(ChangeStyleTxn, EditTxn)
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NS_IMPL_RELEASE_INHERITED(ChangeStyleTxn, EditTxn)
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ChangeStyleTxn::~ChangeStyleTxn()
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{
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}
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// Answers true if aValue is in the string list of white-space separated values
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// aValueList.
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bool
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ChangeStyleTxn::ValueIncludes(const nsAString &aValueList,
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const nsAString &aValue)
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{
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nsAutoString valueList(aValueList);
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bool result = false;
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// put an extra null at the end
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valueList.Append(kNullCh);
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char16_t* value = ToNewUnicode(aValue);
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char16_t* start = valueList.BeginWriting();
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char16_t* end = start;
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while (kNullCh != *start) {
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while (kNullCh != *start && nsCRT::IsAsciiSpace(*start)) {
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// skip leading space
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start++;
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}
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end = start;
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while (kNullCh != *end && !nsCRT::IsAsciiSpace(*end)) {
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// look for space or end
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end++;
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}
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// end string here
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*end = kNullCh;
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if (start < end) {
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if (nsDependentString(value).Equals(nsDependentString(start),
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nsCaseInsensitiveStringComparator())) {
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result = true;
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break;
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}
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}
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start = ++end;
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}
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free(value);
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return result;
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}
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// Removes the value aRemoveValue from the string list of white-space separated
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// values aValueList
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void
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ChangeStyleTxn::RemoveValueFromListOfValues(nsAString& aValues,
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const nsAString& aRemoveValue)
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{
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nsAutoString classStr(aValues);
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nsAutoString outString;
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// put an extra null at the end
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classStr.Append(kNullCh);
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char16_t* start = classStr.BeginWriting();
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char16_t* end = start;
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while (kNullCh != *start) {
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while (kNullCh != *start && nsCRT::IsAsciiSpace(*start)) {
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// skip leading space
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start++;
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}
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end = start;
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while (kNullCh != *end && !nsCRT::IsAsciiSpace(*end)) {
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// look for space or end
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end++;
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}
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// end string here
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*end = kNullCh;
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if (start < end && !aRemoveValue.Equals(start)) {
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outString.Append(start);
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outString.Append(char16_t(' '));
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}
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start = ++end;
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}
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aValues.Assign(outString);
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}
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ChangeStyleTxn::ChangeStyleTxn(Element& aElement, nsIAtom& aProperty,
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const nsAString& aValue,
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EChangeType aChangeType)
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: EditTxn()
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, mElement(&aElement)
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, mProperty(&aProperty)
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, mValue(aValue)
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, mRemoveProperty(aChangeType == eRemove)
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, mUndoValue()
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, mRedoValue()
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, mUndoAttributeWasSet(false)
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, mRedoAttributeWasSet(false)
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{
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}
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NS_IMETHODIMP
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ChangeStyleTxn::DoTransaction()
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{
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nsCOMPtr<nsIDOMElementCSSInlineStyle> inlineStyles =
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do_QueryInterface(mElement);
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NS_ENSURE_TRUE(inlineStyles, NS_ERROR_NULL_POINTER);
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nsCOMPtr<nsIDOMCSSStyleDeclaration> cssDecl;
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nsresult result = inlineStyles->GetStyle(getter_AddRefs(cssDecl));
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NS_ENSURE_SUCCESS(result, result);
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NS_ENSURE_TRUE(cssDecl, NS_ERROR_NULL_POINTER);
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nsAutoString propertyNameString;
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mProperty->ToString(propertyNameString);
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mUndoAttributeWasSet = mElement->HasAttr(kNameSpaceID_None,
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nsGkAtoms::style);
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nsAutoString values;
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result = cssDecl->GetPropertyValue(propertyNameString, values);
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NS_ENSURE_SUCCESS(result, result);
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mUndoValue.Assign(values);
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// Does this property accept more than one value? (bug 62682)
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bool multiple = AcceptsMoreThanOneValue(*mProperty);
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if (mRemoveProperty) {
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nsAutoString returnString;
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if (multiple) {
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// Let's remove only the value we have to remove and not the others
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// The two lines below are a workaround because
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// nsDOMCSSDeclaration::GetPropertyCSSValue is not yet implemented (bug
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// 62682)
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RemoveValueFromListOfValues(values, NS_LITERAL_STRING("none"));
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RemoveValueFromListOfValues(values, mValue);
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if (values.IsEmpty()) {
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result = cssDecl->RemoveProperty(propertyNameString, returnString);
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NS_ENSURE_SUCCESS(result, result);
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} else {
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nsAutoString priority;
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result = cssDecl->GetPropertyPriority(propertyNameString, priority);
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NS_ENSURE_SUCCESS(result, result);
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result = cssDecl->SetProperty(propertyNameString, values,
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priority);
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NS_ENSURE_SUCCESS(result, result);
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}
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} else {
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result = cssDecl->RemoveProperty(propertyNameString, returnString);
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NS_ENSURE_SUCCESS(result, result);
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}
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} else {
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nsAutoString priority;
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result = cssDecl->GetPropertyPriority(propertyNameString, priority);
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NS_ENSURE_SUCCESS(result, result);
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if (multiple) {
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// Let's add the value we have to add to the others
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// The line below is a workaround because
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// nsDOMCSSDeclaration::GetPropertyCSSValue is not yet implemented (bug
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// 62682)
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AddValueToMultivalueProperty(values, mValue);
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} else {
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values.Assign(mValue);
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}
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result = cssDecl->SetProperty(propertyNameString, values,
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priority);
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NS_ENSURE_SUCCESS(result, result);
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}
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// Let's be sure we don't keep an empty style attribute
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uint32_t length;
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result = cssDecl->GetLength(&length);
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NS_ENSURE_SUCCESS(result, result);
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if (!length) {
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result = mElement->UnsetAttr(kNameSpaceID_None, nsGkAtoms::style, true);
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NS_ENSURE_SUCCESS(result, result);
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} else {
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mRedoAttributeWasSet = true;
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}
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return cssDecl->GetPropertyValue(propertyNameString, mRedoValue);
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}
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nsresult
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ChangeStyleTxn::SetStyle(bool aAttributeWasSet, nsAString& aValue)
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{
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nsresult result = NS_OK;
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if (aAttributeWasSet) {
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// The style attribute was not empty, let's recreate the declaration
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nsAutoString propertyNameString;
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mProperty->ToString(propertyNameString);
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nsCOMPtr<nsIDOMElementCSSInlineStyle> inlineStyles =
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do_QueryInterface(mElement);
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NS_ENSURE_TRUE(inlineStyles, NS_ERROR_NULL_POINTER);
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nsCOMPtr<nsIDOMCSSStyleDeclaration> cssDecl;
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result = inlineStyles->GetStyle(getter_AddRefs(cssDecl));
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NS_ENSURE_SUCCESS(result, result);
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NS_ENSURE_TRUE(cssDecl, NS_ERROR_NULL_POINTER);
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if (aValue.IsEmpty()) {
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// An empty value means we have to remove the property
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nsAutoString returnString;
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result = cssDecl->RemoveProperty(propertyNameString, returnString);
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} else {
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// Let's recreate the declaration as it was
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nsAutoString priority;
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result = cssDecl->GetPropertyPriority(propertyNameString, priority);
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NS_ENSURE_SUCCESS(result, result);
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result = cssDecl->SetProperty(propertyNameString, aValue, priority);
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}
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} else {
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result = mElement->UnsetAttr(kNameSpaceID_None, nsGkAtoms::style, true);
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}
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return result;
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}
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NS_IMETHODIMP
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ChangeStyleTxn::UndoTransaction()
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{
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return SetStyle(mUndoAttributeWasSet, mUndoValue);
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}
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NS_IMETHODIMP
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ChangeStyleTxn::RedoTransaction()
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{
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return SetStyle(mRedoAttributeWasSet, mRedoValue);
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}
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NS_IMETHODIMP
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ChangeStyleTxn::GetTxnDescription(nsAString& aString)
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{
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aString.AssignLiteral("ChangeStyleTxn: [mRemoveProperty == ");
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if (mRemoveProperty) {
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aString.AppendLiteral("true] ");
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} else {
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aString.AppendLiteral("false] ");
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}
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aString += nsDependentAtomString(mProperty);
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return NS_OK;
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}
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// True if the CSS property accepts more than one value
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bool
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ChangeStyleTxn::AcceptsMoreThanOneValue(nsIAtom& aCSSProperty)
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{
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return &aCSSProperty == nsGkAtoms::text_decoration;
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}
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// Adds the value aNewValue to the list of white-space separated values aValues
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void
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ChangeStyleTxn::AddValueToMultivalueProperty(nsAString& aValues,
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const nsAString& aNewValue)
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{
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if (aValues.IsEmpty() || aValues.LowerCaseEqualsLiteral("none")) {
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aValues.Assign(aNewValue);
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} else if (!ValueIncludes(aValues, aNewValue)) {
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// We already have another value but not this one; add it
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aValues.Append(char16_t(' '));
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aValues.Append(aNewValue);
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}
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}
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